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1. 浣跨敤Object.clone()鏂规硶锛歄bject绫绘彁渚涗簡涓€涓彈淇濇姢鐨刢lone()鏂规硶锛屽彲浠ョ敤浜庡垱寤哄璞＄殑娴呮嫹璐濄€傚鏋滆瀹炵幇娣辨嫹璐濓紝闇€瑕佸湪瑕佽繘琛屾嫹璐濈殑瀵硅薄绫讳腑瀹炵幇Cloneable鎺ュ彛锛屽苟閲嶅啓clone()鏂规硶锛屽湪clone()鏂规硶涓垱寤烘柊鐨勫璞★紝骞跺皢鍘熷璞＄殑灞炴€у€艰祴缁欐柊瀵硅薄鐨勫睘鎬с€?/li>

绀轰緥浠ｇ爜锛?/p>

public class MyClass implements Cloneable {
    private int id;
    private String name;
    
    // 鏋勯€犳柟娉?/span>
    
    // getter鍜宻etter鏂规硶
    
    @Override
    protected Object clone() throws CloneNotSupportedException {
        MyClass cloned = (MyClass) super.clone();
        // 瀵逛簬寮曠敤绫诲瀷鐨勫睘鎬э紝闇€瑕佽繘琛屾繁鎷疯礉
        cloned.name = this.name.clone();
        return cloned;
    }
}

2. 瀹炵幇Serializable鎺ュ彛锛氬皢瀵硅薄搴忓垪鍖栦负瀛楄妭娴侊紝鐒跺悗鍐嶅皢瀛楄妭娴佸弽搴忓垪鍖栦负鏂扮殑瀵硅薄銆傝繖绉嶆柟娉曢渶瑕佺‘淇濆璞＄殑鎵€鏈夋垚鍛樺彉閲忛兘鏄彲搴忓垪鍖栫殑銆?/li>

绀轰緥浠ｇ爜锛?/p>

import java.io.*;

public class MyClass implements Serializable {
    private int id;
    private String name;
    
    // 鏋勯€犳柟娉?/span>
    
    // getter鍜宻etter鏂规硶
    
    public MyClass deepCopy() throws IOException, ClassNotFoundException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos);
        oos.writeObject(this);
        
        ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
        ObjectInputStream ois = new ObjectInputStream(bis);
        return (MyClass) ois.readObject();
    }
}

3. 浣跨敤绗笁鏂瑰簱锛氬彲浠ヤ娇鐢ㄤ竴浜涚涓夋柟搴擄紝濡侫pache Commons鐨凷erializationUtils绫伙紝鏉ュ疄鐜板璞＄殑娣辨嫹璐濄€?/li>

绀轰緥浠ｇ爜锛?/p>

import org.apache.commons.lang3.SerializationUtils;

public class MyClass {
    private int id;
    private String name;
    
    // 鏋勯€犳柟娉?/span>
    
    // getter鍜宻etter鏂规硶
    
    public MyClass deepCopy() {
        return SerializationUtils.clone(this);
    }
}

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